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-rw-r--r--misc/sys/cdefs.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h
index a5c3224a64..04db9563fb 100644
--- a/misc/sys/cdefs.h
+++ b/misc/sys/cdefs.h
@@ -382,7 +382,9 @@
# define __glibc_likely(cond) (cond)
#endif
-#if !defined _Noreturn && __STDC_VERSION__ < 201112 && !__GNUC_PREREQ (4,7)
+#if (!defined _Noreturn \
+ && (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) < 201112 \
+ && !__GNUC_PREREQ (4,7))
# if __GNUC_PREREQ (2,8)
# define _Noreturn __attribute__ ((__noreturn__))
# else